user
Write an apology letter.
Reason: You canceled a plan at the last minute due to illness.

Response:
assistant
Dear [Name],

I wanted to apologize for canceling our plans at the last minute. I was feeling quite ill, and felt it would not have been considerate to bring that into your home. I understand it was inconvenient, and I deeply regret that I put you in this position.

I hope you will accept my apologies. I'm available to discuss other plans and hopefully fix any inconveniences I have caused.

Sincerely,
[Your Name]